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MH. ALBERT?. MIDDLINGS-SEPARATOVRS.

Patented Aug. 21,1877.

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wlmis'sm ATTDRNEYS.

N4 PETERS, PHOT-UTH'JGRAPMER. WASH'INQTON. v(D, C,

V"U"lvrr-Ein STATES PATENT FFI-GE,

MYRoNl H. ALBERTYY, on oHEnoKEE.KANsAs.

. viMPRovEME'NT `IN MmoLlNes-SEP'ARAi-ons.

Specification forming'part of Letters Patent No. 191,320, dated August 21", 1877; 'application filed June 3o, 1877.

To all whom itmay concern Be itknown that I, MYRON H. ALBERTY,

ful Improvement in Middlings Purifier and Separator, of which the following is a spec-itication Figure l is a side View of my improved machine,V the side of the case being removed and parts being broken away to show thecon struction. Fig. 2 is an end view of the same. Fig. 3 is a side view of the samereversed. Fig. 4 is a detail view of one of the riddles.

Similar letters of reference indicate corresponding parts.

The object of this invention is to purify middlings and separate the f'uzzy and branny particles, and at the same time separate the heavier from the lighter middlings, by subjecting them to currents of air while passing through the machine, which machine shall be simple in construction and effective in use.

The invention consists in the combination of a series of air-passages provided with gates at their outer and inner ends, with a blast-fan and a set of air-chambers 5 in the combination, with the blast-fan and the inlet air-passages, of adjustable riddles, an exhaust or settling chamber, and an exhaust-fan 5 in the combination of grading-valves and dividers with an inclined chute-board, the riddles, the inlet airpassages, and the exhaust-chamber; and in the combination of the slide-board, the divider,

.the blast-fan D are connected five passages,

more or less, F, which are provided with gates G at their lower ends to enable the amount of air passing through each to be regulated as required, and with gates H at their upper ends to enable the angle at which the currents of air strike the middlings to be regulated as required. The middlings are introduced through an opening, a', in the case Aiintothechamber I,-fa'll"upon the inclined boards JL K, and pass through an opening between-saidfboards JK` into the lfirst air-chamber L, where theyLa-re or more of thepassnges F, andbyl currents of air throughI tbevholes in the first riddleM', and the fuzzy and brannyparticlesarecarried over` the upper end of the said riddleinto the chamber N. The heavier middlingsfall nponythe riddle M and pass down through its holes against the air passing up -through saidv holes into the second air-chamber O, where they are met by a current or currents of air from one or more of the passages F. The fuzzy and branny particles are again blown off by the air from the passages F and the air passing up through the holes in the second riddle P, and

are driven over the upper end of the said riddle P into the chamber N. The heavier middlings fall upon the riddle P, and pass through its holes into the third air-chamber Q, where they are again met by a current or currents of air from the passages F, and the fuzzy and branny particles that may still remain are driven over the end of the inclined board R into the chamber N.

The riddles M P are formed by cutting curved slits in sheetnietal plates and turning up the pieces thus cut to form lips, as shown in Figs. 1 and 4. The plates thus formed are attached to trames, and the frames are pivoted at their lower ends to the sides of the case A. The upper ends of the riddles M P are connected by a bar, S, and the said bar is pivoted to acrank, T, which passes out through the side of the case A, and is held in place by a ratchet-wheel, U, and pawl V. This construction enables the riddles M P to be readily adjusted at any desired inclination.

As the middlings enter the air-chamber Q the heavier middlings fall upon the lower part of the inclined board R, slide down it into the hopper W, and pass out through the spout X. The next lighter middlings pass through the grading-valve Y into the spout Z, through which they pass tothe blast-fan D, and are blown through the passages F to again pass through the machine. The next lighter middlings pass through the grading-valve A' into the spout B', and pass out of the machine. The next lighter middlings pass through the grading-valve C' into the spout D'.

To the upper end of the inclined board R is hinged a divider, E', which projects into the chamber N for the heavier particles that have been carried into the chamber N by the air to strike against and fall into the spout D'. The heavier particles that pass over the divider E' pass between the divider F' and the divider E' into the spout D'. The particles that enter the spout D' are conducted by it into the hopper G'. The air is drawn out of the chamber N by the suction-fan E, so that the particles may encounter no resistance in entering said chamber N, and may pass on with the air. As the particles enter the lower part of the chamber N the heavier particles drop into the hopper G', and the lighter particles pass heneath the lower edge of the slide-board H' and over the upper edge of the stationary divider I' into the chamber J'. The heavier particles fall into the hopper K', and pass ont through the spout L' 5 but the lighter particles pass with the air around the lower edge of the inclined board M' and its extension slide-board N' into the chamber O', and thence out through the fan E.

ends, and gates H at their inner ends, with the blast-fan D and the airchambers L O Q,

substantially as herein shown and described.

2. The combination of the adjustable riddles M P with the air-passages F, t-he exhaustchamber N J' O', the blast-fan D, and the eX- haust-fan E, substantially as herein shown and described. I

3. The combination of the grading-valves Y A' C' and the dividers E F' with the inclined board R, the riddles M P, the inlet airpassages F, and the exhaust-chamber N, substantially7 as herein shown and described.

4. The combination of the slide H', the divider l', the inclined board M', and its eXtension N' with the exhaust-air chamber N J' O', substantially as herein shown and described.

MYRON H. ALBERTY.

Witnesses ABM. MoRLEY, IsAAc G. MGKIBBAN. 

